WO2017005006A1

WO2017005006A1 - Gelatinizing device and gelatinizing method for side surface of stator iron core

Info

Publication number: WO2017005006A1
Application number: PCT/CN2016/076102
Authority: WO
Inventors: 金万兵; 聂慧凡; 何欣
Original assignee: 上海鸣志电器股份有限公司
Priority date: 2015-07-06
Filing date: 2016-03-11
Publication date: 2017-01-12
Also published as: CN106329846A; EP3182567A1; EP3182567B1; EP3182567A4

Abstract

A gelatinizing device and gelatinizing method for the side surface of a stator iron core. The gelatinizing method comprises: tidily stacking stator iron cores (2) by using a die (1); and uniformly spraying glue to the inner side surfaces (22) or the outer side surfaces (21) of part of the stacked stator iron cores (2) by using a glue spray nozzle (3). Compared with the prior art, the gelatinizing device and the gelatinizing method increase the productivity of stator iron cores, and overcome the defects of an inter-chip gelatinizing technology.

Description

Stator core side coating equipment and glue coating method

Technical field

The invention relates to a stator core, in particular to a stator core side coating device and a glue coating method.

Background technique

Tiny motors require smaller and smaller component sizes, such as a reduction in the size of the stator core. In order to reduce the iron loss, the silicon steel sheet is required to be thinner and thinner. In the existing stator core processing process, the rivet points are punched out in each piece of silicon steel sheet, and are sequentially stamped and formed. Finally stacked into the required rotor, as shown in Figure 1.

This method eliminates the need for glue between the chips when stacking the stator chips, reducing process time and increasing productivity. However, as tiny motors require smaller and smaller component sizes, such as the reduction in stator core size. In order to reduce the iron loss, the silicon steel sheet is required to be thinner and thinner. When a thin silicon steel sheet is punched, the silicon steel sheet may be broken and the insulation may be broken. During the superposition process, the surface of the silicon steel sheet may be scratched due to the presence of riveting points, resulting in insulation failure between the cores. In addition, if the relative position between the rivet points is slightly shifted during the stacking process, the stack thickness of the entire stator core will increase.

In order to solve the defects caused by the riveting process, a paper proposes a process of applying glue between sheets, firstly punching out a stator chip without rivet points, and applying glue on the second silicon steel sheet to continue punching out the second stator chip. Bonding with the first sheet, applying glue on the third silicon steel sheet, continuing to punch out the third stator chip and bonding the second sheet, repeating the above actions, and finally obtaining the required stator core, as shown in FIG.

This process avoids the insulation problems caused by the riveting process. However, due to the presence of glue between the sheets, the stack thickness may eventually increase. Similarly, as tiny motors require smaller and smaller component sizes, silicon steel sheets are required to be thinner to reduce iron loss. The same stack of stator cores requires more stator chips, so the number of times of glue application between the sheets is also increasing, and the glue coating process time is extended without increasing the equipment capacity. In order to increase productivity, it is necessary to increase the accuracy of the inter-sheet applicator, which will increase the process cost.

Summary of the invention

The object of the present invention is to provide a stator core side coating device and a gluing method for overcoming the defects of the prior art mentioned above. The stator core is stacked neatly by a mold, and the glue is evenly sprayed on the stacking portion by a glue nozzle. The inner side or the outer side of the stator core improves the productivity of the stator core and overcomes the inter-sheet coating Defects in the glue process.

The object of the present invention can be achieved by the following technical solutions:

A stator core side coating device, comprising:

Silicon steel sheet stacking mold for neatly stacking iron core silicon steel sheets;

The glue nozzle is aligned with the inner side or the outer side of the rubber core to be coated.

The silicon steel sheet stacking mold is provided with a cavity for arranging the silicon steel sheets neatly.

The cavity is composed of a silicon steel sheet fixing groove arranged equidistantly.

The glue nozzle is provided with a plurality of symmetrical installations and aligned with the inner side or the outer side of the stator core to be glued.

A stator core side coating method, characterized in that the method comprises the following steps:

1) The iron core silicon steel sheet is automatically stacked neatly under the limitation of the silicon steel sheet stacking mold cavity;

2) After the last piece of iron core silicon steel sheet is stacked, the glue nozzle is used to uniformly spray the glue on the inner side or the outer side of the stacked stator core;

3) After the glue is cured, the required stator core is obtained.

1) While pressing the iron core silicon steel sheet, the inner side or the outer side of the stator core of the silicon steel sheet stacking mold cavity is glued at the same time with a glue nozzle;

2) When the last piece of iron core silicon steel sheet is stamped and coated, the glue on the surface of the stacked iron core is solidified, and the finally solidified stator core is taken out from the silicon steel sheet stacking mold.

Compared with the prior art, the present invention has the following advantages:

1) Compared with the riveting process, the stator core side coating method of the present invention is simpler and can avoid the insulation problem caused by the riveting process.

2) Compared with the riveting process, the stator core side coating process of the present invention has a higher iron core superposition coefficient.

3) Compared with the inter-sheet gluing process, the method for coating the side of the stator core of the invention is simple, avoids the glue application in the iron core stamping process, does not require a quick response gluing machine, and reduces the equipment cost.

4) Compared with the inter-sheet gluing process, the side-coating process of the stator core of the present invention does not have to wait for spraying glue between the sheets when punching the sub-chip, which can significantly reduce the production time of the stator core and improve the productivity.

5) Compared with the inter-sheet glue coating process, the stator core side coating process of the present invention has a higher iron core superposition coefficient, and avoids the increase of the stack thickness caused by the glue between the sheets.

6) Compared with the prior art, the side coating process of the stator core of the invention optimizes the process flow. When the last one After the stator is punched, the stator core does not need to be removed from the mold, and the nozzle begins to be uniformly coated along the inner or outer side of the stator. After the glue is cured, the formed stator core can be obtained. The process eliminates the tooling and time of taking out the stator pieces from the stamping die and then re-stacking and then molding, which saves the tooling cost and improves the efficiency.

7) Compared with the prior art, the variation of the side coating process of the stator core of the present invention optimizes the process flow. The inner side or outer side of the partially stacked stator core is glued while punching the stator core punch. When the last piece of stator punch is stamped and glued, the glue on the surface of the stacked iron core is also basically cured, and the finally solidified stator core can be taken out from the mold. The process eliminates the tooling and time of taking out the stator pieces from the stamping die and then re-stacking and then molding, which saves the tooling cost and improves the efficiency.

DRAWINGS

Figure 1 is a schematic view of a conventional riveting process;

2 is a schematic view of a conventional inter-sheet coating process;

Figure 3 is a schematic structural view of the present invention;

Figure 4 is a schematic cross-sectional view of the present invention;

Fig. 5 is a schematic view showing the structure of a stator core after gluing according to the present invention.

detailed description

The invention will be described in detail below with reference to the drawings and specific embodiments.

Example 1

As shown in Figure 3-5, a stator core side coating equipment includes: a silicon steel sheet stacking mold 1 for neatly stacking iron core silicon steel sheets; a glue nozzle 3 mounted on a silicon steel sheet stacking mold and aligned The inner side surface 22 or the outer side surface 21 of the rubber stator core 2 is glued.

The silicon steel sheet stacking mold 1 is provided with a cavity for arranging the silicon steel sheets neatly. The cavity is composed of a silicon steel sheet fixing groove arranged equidistantly.

The glue nozzles 3 are provided in plurality, mounted on the silicon steel sheet stacking mold 1 and aligned with the inner side or the outer side surface of the stator core to be coated. Preferably, the glue nozzle 3 is provided with four, symmetrically mounted on the silicon steel sheet stacking mold.

The method for coating the side of the stator core of the embodiment includes the following steps:

3) After the glue is cured, the required stator core is obtained.

Example 2

The rest are the same as in the first embodiment.

Claims

A stator core side coating device, comprising:

Silicon steel sheet stacking mold for neatly stacking iron core silicon steel sheets;

The glue nozzle is aligned with the inner side or the outer side of the rubber core to be coated.
The stator core side coating device according to claim 1, wherein the silicon steel sheet stacking mold is provided with a cavity for arranging the silicon steel sheets neatly.
The stator core side coating device according to claim 2, wherein the cavity is formed by a silicon steel sheet fixing groove arranged equidistantly.
The stator core side coating device according to claim 1, wherein the glue nozzle is disposed on an inner side or an outer side surface of the stator core to be glued.
The stator core side coating device according to claim 1 or 4, wherein the glue nozzles are provided in plurality and symmetrically mounted.
A stator core side coating method according to claim 1, comprising the steps of:

1) The iron core silicon steel sheet is automatically stacked neatly under the limitation of the silicon steel sheet stacking mold cavity;

2) After the last piece of iron core silicon steel sheet is stacked, the glue nozzle is used to uniformly spray the glue on the inner side or the outer side of the stacked stator core;

3) After the glue is cured, the required stator core is obtained.
A stator core side coating method according to claim 1, comprising the steps of:

1) While pressing the iron core silicon steel sheet, the inner side or the outer side of the stator core of the silicon steel sheet stacking mold cavity is glued at the same time with a glue nozzle;

2) When the last piece of iron core silicon steel sheet is stamped and coated, the glue on the surface of the stacked iron core is solidified, and the finally solidified stator core is taken out from the silicon steel sheet stacking mold.